Samsung 128GB 80MB/s EVO Select Micro SDXC Memory Card (MB-ME128DA/AM)

Great card for the price and it is fast and is authentic. You would not believe how often these types of cards are counterfeit! I have gotten 2 fakes that did not work and both were sellers on Amazon! The worst part was one was purchased for use on vacation. Halfway through the vacation the memory card just died! It was not even recognized by the phone or the digital camera. I contacted the manufacturer via their website and they confirmed it was a counterfeit card! I was blown away! I lost hundreds of pictures and videos! Amazon went above and beyond when I contacted them, they actually replaced the card with a new one from a trusted seller and had it overnighted to our hotel! They refunded the original purchase price and sent the new one out at no cost! Now when I need a new card I research them a lot better! This card is genuine and it works great and is fast! You just want to make sure your phone or camera can use a card this size. Some phones won't recognize a card over 64gb or 32gb etc. So if you use a card over the maximum size listed, it may not work at all or may only use half the card!

There have been too many times I have ordered SD cards just to find out they're fraudulent. More than 10 times between my husband and myself, we have ordered and tried to load them up but they kept failing. We finally found a program to test the cards and all the cards would say something like 30g good out of 128g or something similar. I was so hesitant to buy yet another fake SD card but tried it anyway and I'm so glad I did as this card is the real deal. It passed the program test and had no problems transferring and holding data. I ended up ordering another one for my husband and he has had no problems either. It's so nice to find a reputable SD card seller for a good price. I definitely recommend this seller and this card!

Just put this in my new Motorola Moto X Pure Edition (32GB) phone. I bought the 128GB Samsung microSD card for extra memory storage. Once I figured out how to insert the microSD card into the phone's slot I was good. I had to "format" the SD card and then a pop-up came up...saying I should insert a "faster" card. Huh? Did I buy the wrong card/speed for this new phone? I want 128GB memory capacity...blazing read/write speed would be great too...but, $$$ talks. Anyway, shot some 4K video on the new phone...which saves/writes to the SD card...no issues. Hooked up a data cable and synced with my laptop...found the 4K video file, no issues. Transferred it to my computer...went pretty darn fast (IMO). So, is the higher speed microSD card really worth more than TWICE the money? Can't justify it. Love the new phone...$350 (Republic Wireless) and $20 (1GB data) plan. And, I rollover my data and they pro-rate the unused data on the next bill (bills are usually $13/month. Win. I also own three Samsung Evo SSDs...no issues! Great stuff.

This is a top of the line memory card. I am an avid picture taker on my cell phone so I love that I don't have to worry about ever running out of space BUT many people are unaware when they purchase these cards that you are not getting the exact GB that is imprinted on the card. When I installed the card it only reads that I have 119.7gb of storage despite not having anything on the card. Still plenty of space to store everything I need but don't expect an exact 128gb of storage to be added.

Update 8/25/2016: Added the 256GB card to the comparison. It was much faster write speed and met the 95 MB/s read and 90MB/s write claims! I tested the 64GB and 128GB cards. Both cards exceeded the advertised speeds (80MB/s read and 20MB/s write). The 64GB card provided higher read and write speeds compared with the 128GB card. The 64GB card showed very high 512K random read and write speeds, the random write speeds exceeded the sequential writes. I tested in several different USB 3.0 card readers, the highest benchmarks: EVO Select 64GB Sequential Read : 97.361 MB/s Sequential Write : 25.626 MB/s Random Read 512KB : 88.232 MB/s Random Write 512KB : 64.917 MB/s Random Read 4KB (QD=1) : 9.424 MB/s [ 2300.8 IOPS] Random Write 4KB (QD=1) : 1.717 MB/s [ 419.2 IOPS] Random Read 4KB (QD=32) : 10.423 MB/s [ 2544.8 IOPS] Random Write 4KB (QD=32) : 1.445 MB/s [ 352.8 IOPS] EVO Select 128GB Sequential Read : 82.839 MB/s Sequential Write : 22.677 MB/s Random Read 512KB : 72.126 MB/s Random Write 512KB : 5.837 MB/s Random Read 4KB (QD=1) : 4.969 MB/s [ 1213.1 IOPS] Random Write 4KB (QD=1) : 0.898 MB/s [ 219.3 IOPS] Random Read 4KB (QD=32) : 5.396 MB/s [ 1317.3 IOPS] Random Write 4KB (QD=32) : 0.122 MB/s [ 29.8 IOPS] EVO Select 256GB Sequential Read : 95.664 MB/s Sequential Write : 89.637 MB/s Random Read 512KB : 82.579 MB/s Random Write 512KB : 54.243 MB/s Random Read 4KB (QD=1) : 5.931 MB/s [ 1448.1 IOPS] Random Write 4KB (QD=1) : 2.820 MB/s [ 688.4 IOPS] Random Read 4KB (QD=32) : 8.474 MB/s [ 2068.8 IOPS] Random Write 4KB (QD=32) : 3.596 MB/s [ 878.0 IOPS]

I didn't buy this for using it actively, it's more like additional storage in my Surface Pro 3. I don't run programs from it, and just generally keep stuff like saved movies, backups, etc on it, but always inserted in my computer. It's been a little more than 2 years and I haven't had a single problem with it, in any way. It has never failed, never disconnected itself, never failed to recognize it in the computer, and it has never been slow when accessing things on it or putting anything on it. I would recommend it 10000% for this kind of use. Please read other reviews if you're using it more actively, such as in a camera or actively using programs on it.

I use the card on my LG G5 and the cards works smooth. Recordings load fast no lag and plenty of space to last a long long time. There were other cards available for the same price that supposedly offered faster writing and reading speeds, but none of them offer the piece of mind of a Samsung one. Besides there is no notice lag at all. I haven't try recording in 4K yet because honestly it's pointless to me since I don't have a 4K tv yet. But I have been doing full high def recording on the outside and look gorgeous and so smooth.

This works great in phones and cameras. It has enough storage space that I don't have to worry about it filling up too quick.